Plywoods » cdx plywood

We’re switching from shake to composition. What kind of plywood?

admin — Fri, 24 Jun 2011 18:10:29 +0000

We have to use plywood for our new presidential shingles, and every estimate I get has a different answer. Two roofer guys say OSB, one guy say 3/8" CDX plywood, and 2 said 1/2" CDX plywood (yes we’re getting 5 estimates). The prices are all over the board, and we want to make the best decision. What do you know about this? What is the best plywood for roofing?

It’s great to hear that you’re installing presidential shingles, that’s a great roof! You should steer clear of OSB, especially for installing it underneath a roof that will last for 50 years plus. OSB will absorb water from the atmosphere, and from the inside of your attic, thereby a weakening the foundation that your shingles are nailed to.
As for 3/8 inch plywood, in many places it’s code when you going over the boards that your shakes are currently nailed to. But it is a very thin plywood, and if you’re putting out the money for a very expensive shingle such as presidential shingles, you need to make sure that your substrate is truly a rock solid.
Half inch CDX plywood give you a solid foundation, high resistance to atmospheric moisture and humidity, and strong resistance to the winds pulling the nails out.

How much would you pay for this?

admin — Sun, 05 Jun 2011 23:07:05 +0000

I didn’t make this but if it were 6′ tall painted on 1/2" CDX plywood, seriously, what do you think a person should charge for it? What "realistic" price would you pay?

http://www.backyardchickens.com/forum/uploads/61151_april_7a_001.jpg

@ peanut 2, Thanks for your answer. 1 British pound sterling = 1.6361 US dollars respectively so at 20 pounds would equal approximately $32.60 in American. 1/2" CDX Plywood ia about $24 per sheet. Given the size of the Batman figure would take up a whole sheet plus time and paint wouldn’t give much of a profit.

@ Dontneedtoknow, Thanks for your answer. You are right a comic fan might pay more and you just taught me a valuable point. Design your art to target specific types of individuals who are into particular types of subject matter. Plan ahead capitalizing on holidays, sports events, racing events and so on. Customize your work specifically to the areas for most positive sales. Ebay is also a good idea. Thanks for your input.

A regular person, $10 but I suggest you sell it to like a comic fan, comic store or a toy store. Private owned comic and toy stores always look for stuff like that for decoration and might even pay $40 bucks. Also a comic fan might want to buy it. Try eBay

Is ACX grade plywood stronger than CDX grade plywood?

admin — Sun, 20 Feb 2011 20:30:49 +0000

I am trying to make couple of plywood cases for instruments which can handle the abuse of baggage handlers. I am trying to keep the cost to the very minimum. Having said that CDX plywood is cheaper than ACX or BCX plywoods. I realize that the ACX has one side sanded and the other side pretty rough. And CDX has both sides really rough with knots and holes and all. My question is does this mean that CDX ply will be less stronger than ACX? I am not worried about how the face looks as I am going to be covering the plywood with carpet. Just want to know if CDX is as strong as ACX. Thanks.
Additional question I meant to ask – is OSB as strong as Plywood for my case. I see OSB is very cheap. thanks.

the strength of plywood depends on the number of plies and the thickness of the plywood.
As you said the a, b, c, and d relate to the quality of the finish. X means the glue will handle moisture(not submersed, mind you.). A is best and D is worst. For what you suggest the CDX is fine.
For durability just get the thickness you desire.
The fractional number on the grade stamp relates to how far between support studs the plywood can be nailed and be within code standards(for floors and roofing)

I heard the glue in OSB is bad for radiant heated floors as it gives off VOC’s. Is CDX any better?

admin — Sat, 20 Nov 2010 07:51:03 +0000

Do they use the same glues for OSB as CDX? What happens to those glues and other chemicals used in the processing of plywood when heat of 85 degrees F is applied to them?

I don’t see a problem using OSB. That is one of the sub floors that the manufacturers of the radiant heat recommends. I don’t know where you heard that the glues "and other chemicals" are a problem somehow, but it sounds like hogwash to me. Check the link. That particular one is actually made of OSB.
Al

Is it ok to use cdx pine plywood for a miter saw station?

admin — Thu, 18 Nov 2010 15:04:40 +0000

yes,

Is CDX plywood the same as sheathing?

admin — Fri, 14 May 2010 07:59:05 +0000

Sheathing refers to exterior cladding (roofs, walls, etc.)

CDX is a specific grade/type of plywood that is most often used for sheathing.

Is it ok to sand 3/4 inch cdx pine plywood to achieve a smooth surface?

admin — Tue, 30 Mar 2010 09:30:32 +0000

You can sand it lightly but if you want something really smooth go to AC or MDF

Underlayment for Pine "Hardwood" Flooring?

admin — Mon, 22 Mar 2010 06:24:32 +0000

I’m planning to install yellow pine flooring over OSB plywood but I want to add another layer of plywood to make the floors more stable and even. I will be face nailing.

I’m reading I should add 1/2 inch CDX plywood, which I’m willing to do but are there any other options? other sizes of plywood? Also if I add the plywood underlayment, do I lay directly on top of the existing OSB plywood or stagger them for more stability?

Once I do that, I want to add rosin felt paper or plastic sheeting between the OSB floor and plywood underlayment. Necessary or unnecessary? This is directly over a basement.

Thanks, you guys are the best!!

I d recommend 1/2 ply wood and go perpendicular to the ply wood down now to get the most ridged sub floor.
Glue and screw this floor well,
Depending on the width of of pine flooring would determine what I d do next.
If you have anything wider the a 4" plank, I would both glue it down and top nail. Since your top nailing I m guessing it isn t tongue and groove pine. If you don t glue a wide plank , that isn t a T&G wood,when top nailing , you very likely to get cupping.
If it is a T&G wood your not as likely and use of a felt paper is recommended to help prevent wood on wood noise.
Any questions you can e mail me through my avatar. GL

Is this house condemned?

admin — Wed, 10 Mar 2010 09:18:26 +0000

Building my own house started in June of 2008 down here in southeast TX and to this day there isn’t a roof on it yet. The house was built out 2×6′s for all framing the floor is 3/4 inch plywood CDX. I pulled one the sheathing panels off side wall I had up and there was mold up on stud plates between the two top plates up there wood seems solid still but my concern is once the roof is on and it all closed in will it be possible to kill the mold or should I just set match to it all and start over except some how go faster next house I build. Im a one man crew. Any suggestions would help thanks.

spray it down with bleach or an mild acid and Finnish it

Taupe en folie

admin — Thu, 18 Feb 2010 22:08:24 +0000

La planche de plywood est tombé sur les orteils à taupe(le gars avec le gilet blanc)… la planche va vite comprendre qu’elle aurait pas dû…

Duration : 0:1:27

[youtube CdX-BurOL7A]